Commit Graph

1539 Commits

Author SHA1 Message Date
bors
346f8f2219 Auto merge of #2036 - RalfJung:vec, r=RalfJung
regression test for reverse() unsoundness

Cc https://github.com/rust-lang/rust/pull/90821
2022-03-24 14:33:02 +00:00
Ralf Jung
3275df31ea rustup 2022-03-24 10:06:33 -04:00
Ralf Jung
951ac65f26 regression test for reverse() unsoundness 2022-03-22 14:28:36 -04:00
Ralf Jung
694846f8b4 vec test: check number validity 2022-03-22 14:26:40 -04:00
Ralf Jung
aafc0694fc test arbitrary-self dyn receivers 2022-03-20 14:03:46 -04:00
Ralf Jung
65469fe85b test remove_dir_all 2022-03-20 10:36:27 -04:00
bors
57786678d4 Auto merge of #1975 - DrMeepster:backtrace_fix, r=RalfJung
Make backtraces work with #[global_allocator]

Currently, backtraces break when the global allocator is overridden because the allocator will attempt to deallocate memory allocated directly by Miri.

~~This PR fixes that by using a new memory kind and providing a function to deallocate it. We can't call the custom allocator to allocate because it's not possible to call a function in the middle of a shim.~~

This PR fixes that by adding a new version of the backtrace API accessible by setting `flags` to 1. Existing code still functions.

backtrace-rs PR: rust-lang/backtrace-rs#462

Fixes https://github.com/rust-lang/miri/issues/1996
2022-03-20 02:37:09 +00:00
DrMeepster
2c670b10df add new version of backtrace api using flags=1 2022-03-19 18:14:11 -07:00
Ralf Jung
1b1321a685 fix simd_bitmask shorter than a byte on big-endian 2022-03-17 13:14:16 -04:00
Ralf Jung
b5d3a25b49 detect when unused bits of a SIMD bitmask are non-0 2022-03-17 13:08:01 -04:00
Ralf Jung
bfed3c4f0d implement simd bitmask intrinsics 2022-03-17 13:08:01 -04:00
bors
670dc7d551 Auto merge of #1971 - saethlin:sb-details, r=RalfJung
Add a lot more information to SB fatal errors

In fatal errors, this clarifies the difference between a tag not being present in the borrow stack at all, and the tag being present but granting SRO. It also introduces a little notation for memory ranges so we can mention to the user that the span may point to code that operates on multiple memory locations, but we are reporting an error at a particular offset.

This also gets rid of the unqualified phrase "the borrow stack" in errors, and clarifies that it is the borrow stack _for some location_.

The crate `pdqselect` v0.1.1:
Before:
```
2103 |     unsafe { copy_nonoverlapping(src, dst, count) }
     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no item granting read access to tag <2357> at alloc1029 found in borrow stack.
```
After:
```
2103 |     unsafe { copy_nonoverlapping(src, dst, count) }
     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |              |
     |              attempting a read access using <2357> at alloc1029[0x0], but that tag does not exist in the borrow stack for this location
     |              this error occurs as part of an access at alloc1029[0x0..0x4]
```

And the crate `half` v1.8.2
Before:
```
131 |     unsafe { &mut *ptr::slice_from_raw_parts_mut(data, len) }
    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ trying to reborrow for Unique at alloc1051, but parent tag <2091> does not have an appropriate item in the borrow stack
```
After:
```
131 |     unsafe { &mut *ptr::slice_from_raw_parts_mut(data, len) }
    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |              |
    |              trying to reborrow <2091> for Unique permission at alloc1051[0x0], but that tag only grants SharedReadOnly permission for this location
    |              this error occurs as part of a reborrow at alloc1051[0x0..0x6]
```
2022-03-17 13:26:29 +00:00
Ralf Jung
4fd5dca27c implement SIMD sqrt and fma 2022-03-16 22:13:43 -04:00
Ben Kimock
730cd27248 Print more in SB error diagnostics
This tries to clarify exactly why an access is not valid by printing
what memory range the access was over, which in combination with
tag-tracking may help a user figure out the source of the problem.
2022-03-16 20:12:04 -04:00
Ralf Jung
1f237b3b7d implement SIMD float rounding functions 2022-03-16 18:53:36 -04:00
Ralf Jung
f338b0229b test integer SIMD min/max 2022-03-14 09:53:49 -04:00
Jubilee Young
61bfa8afe8 Fixup renamed fn for Simd 2022-03-13 19:03:08 -07:00
Ralf Jung
bae720c75b add ptr_offset_from OOB test, and update test errors 2022-03-10 18:56:19 -05:00
Ralf Jung
41ffce1145 implement simd_scatter 2022-03-09 19:29:05 -05:00
Ralf Jung
576e2bbed5 implement gather 2022-03-09 19:29:05 -05:00
Ralf Jung
3eba7fcf73 implement simd_shuffle 2022-03-09 19:29:05 -05:00
Ralf Jung
6d3506adef fs: add and test for DirectoryNotEmpty error variant 2022-03-07 18:30:12 -05:00
Tavian Barnes
0886419524 Implement a readdir64() shim for Linux
Partial fix for #1966.
2022-03-07 16:19:03 -05:00
Ralf Jung
735bee2736 implement simd_saturating intrinsics 2022-03-07 14:12:59 -05:00
Ralf Jung
b87a9c90e1 fix handling of NaNs in simd max/min 2022-03-07 09:49:35 -05:00
Ralf Jung
2f97eb68a0 implement simd_fmax/fmin 2022-03-07 09:40:23 -05:00
Ralf Jung
9851b743c1 implement simd_reduce_min/max 2022-03-07 09:40:23 -05:00
Ralf Jung
db06d4998f implement simd_cast, simd_as 2022-03-07 09:40:23 -05:00
bors
a25d905ddf Auto merge of #2003 - RalfJung:simd-reduce-test, r=RalfJung
also test f32/f64 simd_reduce

Forgot to include this in https://github.com/rust-lang/miri/pull/2001
2022-03-06 04:22:12 +00:00
Ralf Jung
21d36ffd04 also test f32/f64 simd_reduce 2022-03-05 23:03:14 -05:00
Ralf Jung
9810a147a7 add extra tests for shifts with negative offsets 2022-03-05 22:59:23 -05:00
Ralf Jung
b491b72673 implement simd_reduce_{add,mul} 2022-03-05 19:02:00 -05:00
Ralf Jung
3ed8ad4423 avoid repeated string matching, and add more simd_reduce intrinsics 2022-03-05 18:46:14 -05:00
bors
3854a76ace Auto merge of #1970 - asquared31415:open_unix_varargs, r=RalfJung
Allow varargs for libc::open when it is allowed by the second argument

This PR allows `libc::open` to be called using two or three arguments as defined in https://man7.org/linux/man-pages/man2/open.2.html

The presence of the third argument depends on the value of the second argument.  If the second argument dictates that the third argument is *required* miri will emit an error if the argument is missing.  If the second argument does *not* require a third argument, then the argument is ignored and passed as 0 internally (it would be ignored by libc anyway)
2022-03-05 22:47:51 +00:00
asquared31415
8e97599af4 allow varargs for libc::open when it is allowed by the second argument 2022-03-05 17:29:48 -05:00
Ralf Jung
ec0e513c64 rustup 2022-03-05 17:26:32 -05:00
bors
926af6493b Auto merge of #1999 - RalfJung:forward-env, r=oli-obk
add flag to forward specific env vars (while isolation remains enabled)

The flag is called `-Zmiri-env-forward=<var>`, but I am open to bikeshedding. ;)
2022-03-05 19:36:10 +00:00
Ralf Jung
90207a5484 implement missing SIMD comparison operators, simd_xor, and simd_reduce_all 2022-03-05 13:45:13 -05:00
Ralf Jung
3adc203c1c add flag to forward specific env vars (while isolation remains enabled) 2022-03-05 11:14:37 -05:00
Ralf Jung
0d4902f12f implement simd_neg and simd_fabs 2022-03-03 14:54:54 -05:00
Ralf Jung
c0f7251055 add test for simd division overflow UB 2022-03-03 12:32:42 -05:00
Ralf Jung
97ddcf1f6b adjust for div/rem overflow being UB 2022-03-03 12:14:24 -05:00
Ralf Jung
798dc5a78a Make sure we notice when a u16 is loaded at offset 1 into a u8 allocation 2022-03-02 13:06:28 -05:00
Ralf Jung
363236e2d4 test overflowing Div/Rem 2022-03-01 18:44:37 -05:00
Ralf Jung
aa4f82ea48 implement simd_select 2022-03-01 18:40:40 -05:00
Ralf Jung
c347b04e82 add test for rust issue 94371 2022-02-27 15:27:34 -05:00
Ralf Jung
e9b140b4a5 update fn ptr tests 2022-02-25 12:06:10 -05:00
Ralf Jung
444396d620 rustup 2022-02-24 10:55:40 -05:00
Ralf Jung
1ac1e55f3b implement simd_eq and simd_reduce_any 2022-02-21 21:41:52 -05:00
Ralf Jung
6b8baee339 rustup; implement simd_and/or 2022-02-04 17:56:08 +01:00